Finding the Least Common Multiple

The video tutorial by Professor Maurício Munz introduces the concept of the Minimum Common Multiple (MMC) and demonstrates how to find it using two methods: listing multiples and prime factorization. The tutorial provides examples with numbers 4 and 10, and 5 and 6, explaining each step in detail to ensure understanding. The video emphasizes the importance of finding the smallest common multiple and offers practical tips for using prime numbers in calculations.

What is the Least Common Multiple (LCM) of two or more positive integers?

• The difference between the largest and smallest given numbers

• The largest number that divides all the given numbers

• The smallest number that is a multiple of all the given numbers

• The sum of the given numbers

What is the LCM of 4 and 10 using their multiplication tables?

• 25

• 20

• 15

• 10

Tags

CCSS.4.OA.B.4

Which of the following is a prime number?

• 4

• 6

• 8

• 7

What is the first step in finding the LCM of 4 and 10 using prime factorization?

• Add both numbers

• Multiply both numbers by 2

• Divide both numbers by 2

• Divide both numbers by 3

What is the LCM of 4 and 10 using prime factorization?

• 25

• 20

• 15

• 10

What is the LCM of 5 and 6 using their multiplication tables?

• 20

• 25

• 30

• 35

What is the first step in finding the LCM of 5 and 6 using prime factorization?

• Add both numbers

• Multiply both numbers by 2

• Divide both numbers by 3

• Divide both numbers by 2

What is the LCM of 5 and 6 using prime factorization?

• 30

• 25

• 35

• 20

Tags

CCSS.4.OA.B.4

Which of the following is not a prime number?

• 5

• 4

• 2

• 3

What is the final step in finding the LCM using prime factorization?

• Multiply the prime factors

• Add the prime factors

• Subtract the prime factors

• Divide the prime factors